CN210875780U - Multi-gradient magnetic adjustable dry separator - Google Patents

Abstract

The utility model provides a many gradients magnetic force adjustable dry separation machine, including frame, first gradient magnetic bed, second gradient magnetic bed, sweep and select cylinder, first branch ore deposit conveyer and second branch ore deposit conveyer, first gradient magnetic bed is installed the upper portion of frame, second gradient magnetic bed are installed the middle part of frame is swept and is selected the cylinder and install the lower part in the frame, and first gradient magnetic bed is connected through fixing the first branch ore deposit conveyer in the frame with second gradient magnetic bed, and second gradient magnetic bed and sweep and select the cylinder to connect through fixing the second branch ore deposit conveyer in the frame, and the top of frame sets up the feed inlet, and the bottom is equipped with the ore outlet. The utility model discloses a multistage combined type ore dressing has guaranteed that concentrate product quality is stable, selects separately thoroughly, and it is big once to throw the tail volume.

Description

Multi-gradient magnetic adjustable dry separator

technical field

The utility model relates to a dry sorter, in particular to a dry sorter with adjustable multi-gradient magnetic force.

Background technique

With the continuous reduction of iron ore resources, the grade of iron ore resources has gradually decreased, and multi-stage magnetic separation equipment has attracted more and more attention. At present, mines mostly use conventional secondary drums for a separate three-stage dry separation configuration: the weak magnetic magnetic drum is used for rough separation to recover strong magnetic magnetite, and the coarse magnetic tailings products are fed into the medium magnetic magnetic drum to sweep the strong magnetic minerals. Finally, the medium magnetic tailings are recycled through the strong magnetic magnetic drum for weak magnetic recovery.

The conventional cylindrical dry separator uses the centrifugal force generated by the rotation of the sorting cylinder, the gravity of the particles and the magnetic force of the cylinder to achieve the separation of magnetic particles and non-magnetic particles. Limited by its structural form and sorting performance, there are the following Problems: First, the magnetic inclusions are serious, resulting in a limited improvement in concentrate grade; second, the rejection rate is low; third, the separation is unclear, resulting in problems such as high tailings grade.

Utility model content

In order to solve the above technical problems, the utility model provides a dry separator with adjustable multi-gradient magnetic force, which realizes multi-stage compound beneficiation, ensures stable quality of concentrate products and complete separation, and at the same time, the adjustment of magnetic force is suitable for different types of magnetite ore. materials.

The scheme adopted in the technical problem solved by the utility model is:

A multi-gradient magnetic adjustable dry separator includes a frame, a first gradient magnetic bed, a second gradient magnetic bed, a sweeping drum, a first ore separation conveyor and a second ore separation conveyor. The gradient magnetic bed is installed on the upper part of the frame, the second gradient magnetic bed is installed in the middle of the frame, the sweeping drum is installed at the lower part of the frame, and the first gradient magnetic bed is connected to the The second gradient magnetic bed is connected by the first ore separation conveyor fixed on the frame, the second gradient magnetic bed and the sweeping drum are connected by the second ore separation conveyor fixed on the frame, The top of the frame is provided with a feeding port, and the bottom is provided with a ore outlet.

Among them, the first gradient magnetic bed is used to complete the first screening of materials under the action of gravity, magnetic force, centrifugal force, etc., and the concentrate and tailings are separated; the second gradient magnetic bed is used to complete the action of gravity, magnetic force, centrifugal force, etc. The second screening of the material separates the medium ore and tailings; the sweeping drum is used to complete the third screening of the material under the action of gravity and centrifugal force to separate the medium and tailings. The above structure realizes three-stage gradient beneficiation, ensures thorough separation, effectively reduces the content of magnetic iron in tailings, removes non-magnetic materials in the ore material, improves the purity or grade of magnetic materials, reduces the amount of material grinding, and reduces the production cost of the subsequent process.

Preferably, the structures of the first gradient magnetic bed and the second gradient magnetic bed are the same, and the structures of the first ore separating conveyor and the second ore separating conveyor are the same. Among them, the magnetic strength of the first gradient magnetic bed is weaker than that of the second gradient magnetic bed, and the magnetite with the highest magnetic strength in the material, that is, the concentrate, can be screened out.

Preferably, the first gradient magnetic bed comprises a magnetic drum, a transmission drum, a conveyor belt, a first magnetic system, and a second magnetic system, the magnetic drum is installed at one end of the upper part of the frame, and the transmission drum is installed in the upper part of the frame. At the other end of the upper part of the frame, the conveyor belt is wound on the magnetic drum and the transmission drum, the first magnetic system is installed near the inner side of the upper surface of the conveyor belt, and the second magnetic system is installed near the upper surface of the conveyor belt. The inner side of the lower surface of the conveyor belt. The beneficial effect of adopting this step is that the first gradient magnetic bed and the second gradient magnetic bed are not only conducive to the sorting of materials by the magnetic drum, but also have a first magnetic system and a second magnetic system, wherein the first magnetic system It mainly realizes the magnetic force to fully flip the iron ore material, and solves the problems of serious inclusion of magnetic materials and non-magnetic materials, poor separation effect and incomplete separation. The second magnetic system of the first gradient magnetic bed is used to adsorb materials with strong magnetic force. Sort out the concentrate to improve the purity and taste of the concentrate. The second magnetism in the second gradient magnetic bed is used for adsorbing materials with relatively weak magnetic force, and sorting out medium ore.

Preferably, the outlet includes a first tailings outlet, a concentrate outlet, a middle mine outlet and a second tailings outlet, the first tailings outlet is located below the magnetic drum, and the concentrate outlet is located at the bottom of the magnetic drum. Below the transmission drum of the first gradient magnetic bed, the middle ore port is located below the transmission drum and the sweeping drum of the second gradient magnetic bed, and the second tailings port is located in the sweeping drum away from the middle ore under the side of the mouth.

Preferably, the first magnetic system includes a plurality of first permanent magnets fixed on the frame, the first permanent magnets are arranged at intervals along the moving direction of the upper surface of the conveyor belt, and the first permanent magnets are N poles and S poles are alternately arranged. The beneficial effect of this step is that the N poles and the S poles of the first permanent magnet are alternately arranged, which is beneficial for the material to be turned over under the action of the magnetic force and improves the separation effect of the magnetic material and the non-magnetic material.

Preferably, the second magnetic system includes a plurality of second permanent magnets fixed on a screw lift or an electro-magnetic disk, the screw lift or the electro-magnetic disk is fixed on the frame, and the second permanent magnets are along the conveyor belt The direction of motion of the lower surface is spaced apart. The beneficial effect of this step is to control the length of the magnetic field line of the second permanent magnet by controlling the height of the screw rod, thereby controlling the magnetic field strength, and then controlling the magnetic strength of the conveyor belt when passing through the second permanent magnet; or the second permanent magnet and the electromagnet Fixed connection, the electromagnet is energized, and the magnetic force of the second permanent magnet is adjusted by controlling the magnitude of the current, thereby changing the magnetic force under the first gradient magnetic bed and the second gradient magnetic bed. Therefore, according to the actual situation of the magnetite material, the magnetic strength under the first gradient magnetic bed and the second gradient magnetic bed can be adjusted, so as to facilitate the effective separation and screening of magnetite of different specifications.

Preferably, the magnetic drum is provided with an inner drum and a plurality of third permanent magnets, the inner drum is installed on the shaft of the magnetic drum, and the third permanent magnets are installed on the magnetic drum away from the On one side of the transmission drum, the third permanent magnets are radially arranged along the outer surface of the inner drum to form a semi-circular ring, and the N poles and the S poles of the third permanent magnets are alternately arranged. The beneficial effect of this step is that the magnetic drum is used for material sorting under the action of gravity, magnetic force, centrifugal force, etc. The side of the magnetic drum away from the transmission drum has a magnetic force, attracting materials with magnetic force, and materials without magnetic force will be thrown out , that is, the tailings are separated, and the material is adsorbed on the conveyor belt due to the magnetic force. When the material moves to the non-magnetic side of the magnetic drum, the material falls into the first ore conveying belt or the second ore because of the loss of magnetic force. On the conveyor belt, and then the material (the material that is not thrown out) is sorted.

Preferably, the feeding ends of the first ore dividing conveyor and the second ore dividing conveyor are respectively located below the side of the magnetic drum close to the transmission drum. The beneficial effect of adopting this step is to ensure that the unthrown material completely falls on the first ore-separating conveyor or the second ore-separating conveyor, and the tailings all fall into the tailings mouth.

Preferably, the rack is fully enclosed. The beneficial effect of this step is to realize fully enclosed operation, reduce dust pollution, and ensure safety and environmental protection.

The beneficial effects of the present utility model:

1. The utility model provides a dry separator with adjustable multi-gradient magnetic force. The first gradient magnetic bed, the second gradient magnetic bed and the scavenging drum realize multi-stage compound beneficiation, which ensures the stable quality of concentrate products. The sorting is thorough, the amount of tailings thrown at one time is large, and the tailings products can reach below 0.5 to 0.7. The product with the grade of concentrate powder can reach more than 50% at a time, and the enrichment can reach 90%-95% (according to the situation of each mine). At the same time, the grade of concentrate powder after separation is improved, and the volume and tonnage input to the lower stage is reduced, which reduces the amount of grinding in the subsequent stage, and the amount of grinding in the latter stage is reduced by about 50%.

2. In the present invention, the second magnetic system includes a plurality of second permanent magnets fixed on the screw lifter or the electro-magnetic disk, and the distance between the second permanent magnet block and the conveyor belt is adjusted by the screw lifter, thereby controlling the strength of the magnetic force ; Or connect the electric power through the electric disk, control the current size, and realize the adjustment of the magnetic force of the permanent magnet. Therefore, an appropriate magnetic force can be set according to the type of magnetite material, so as to facilitate effective separation and screening.

3. The frame in the utility model is a fully enclosed type, which realizes the fully enclosed operation and is safe and environmentally friendly.

Description of drawings

1 is a schematic structural diagram of a dry separator with adjustable multi-gradient magnetic force in a certain embodiment of the present utility model;

2 is a schematic structural diagram of a first gradient magnetic bed in an embodiment;

3 is a schematic structural diagram of a second magnetic system in a certain embodiment;

4 is a schematic structural diagram of a second magnetic system in a certain embodiment;

Fig. 5 is the structural representation of the magnetic drum in a certain embodiment;

Wherein: 1-frame; 2-first gradient magnetic bed; 3-second gradient magnetic bed; 4-sweeping drum; 5-first ore distribution conveyor; 6-second ore distribution conveyor;

101-feeding port; 102-mining port;

201-magnetic drum; 202-transmission cylinder; 203-conveyor belt; 204-first magnetic system; 205-second magnetic system;

1021-first tailings mouth; 1022-concentrate mouth; 1023-middle mines mouth; 1024-second tailings mouth;

2011-inner drum; 2022-third permanent magnet;

2031-upper surface; 2032-lower surface;

2051-Second permanent magnet; 2052-Screw lift; 2053-Electromagnetic disk.

Detailed ways

The embodiments of the technical solutions of the present utility model will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present invention more clearly, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

It should be noted that, unless otherwise specified, the technical or scientific terms used in the present application shall have the usual meanings understood by those skilled in the art to which the present invention belongs.

In the description of this application, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "radial", etc. indicate The orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as a limitation of the present invention.

In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. In the description of the present invention, "plurality" means two or more, unless otherwise clearly defined.

In this application, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The utility model provides a dry separator with adjustable multi-gradient magnetic force, which realizes multi-stage compound beneficiation, ensures stable quality of concentrate products, complete separation, large amount of tails thrown at one time, and tailings products can reach 0.5~ 0.7 or less. The product with the grade of concentrate powder can reach more than 50% at a time, and the enrichment can reach 90%-95% (according to the situation of each mine). After separation, the grade of concentrate powder is improved, and the volume and tonnage input to the lower stage is reduced, which reduces the input grinding amount of the subsequent stage process, and the input grinding amount entering the latter stage is reduced by about 50%.

Referring to Fig. 1, a dry separator with adjustable multi-gradient magnetic force includes a frame 1, a first gradient magnetic bed 2, a second gradient magnetic bed 3, a sweeping drum 4, a first ore separation conveyor 5 and a second Ore separation conveyor 6, the first gradient magnetic bed 2 is installed in the upper part of the frame 1, the second gradient magnetic bed 3 is installed in the middle of the frame 1, and the sweeping drum 4 is installed in the In the lower part of the frame 1, the first gradient magnetic bed 2 and the second gradient magnetic bed 3 are connected by the first ore-separating conveyor 5 fixed on the frame 1, and the second gradient magnetic bed 3 and the scanning The selection drum 4 is connected by the second ore-distributing conveyor 6 fixed on the frame 1 . The top of the frame 1 is provided with a feeding port 101 and the bottom is provided with a ore outlet 102 .

The structures of the first gradient magnetic bed 2 and the second gradient magnetic bed 3 are the same, and the structures of the first ore separation conveyor 5 and the second ore separation conveyor 5 are the same. As shown in FIG. 1 , the first gradient magnetic bed 2 and the second gradient magnetic bed 3 are only different in length, and the first gradient magnetic bed 2 is longer than the second gradient magnetic bed 3 .

In specific work, the first gradient magnetic bed 2 is used for screening concentrates and tailings, the second gradient magnetic bed 3 is used for screening medium ores and tailings, and the scavenging drum is used for screening medium ores and tailings. The magnetic strength of the first gradient magnetic bed 2, the second gradient magnetic bed 3, and the sweeping drum 4 can be set according to the properties of the ferromagnetic mineral material and the specific conditions of production requirements.

The first ore-separating conveyor 5 and the second ore-separating conveyor 6 are both in the prior art. They are driven by motors and are used to transport magnetite that has not been thrown into the second gradient magnetic bed 3 and the scavenging drum, respectively. 4. Carry out the second and third screening.

In a preferred embodiment, referring to FIG. 2, the first gradient magnetic bed 2 includes a magnetic drum 201, a transmission drum 202, a conveyor belt 203, a first magnetic system 204 and a second magnetic system 205, wherein the magnetic drum 201 and the The transmission cylinder 202 is connected by the surrounding conveyor belt 203, the magnetic drum 201 and the transmission cylinder 202 are installed on the frame 1 through the bearing seat, the shaft of the transmission cylinder 202 is connected with the motor, the motor drives the rotation of the transmission cylinder 202, and the rotational speed can be adjusted according to the ferromagnetic Mine and production requirements are set according to specific circumstances. As shown in FIG. 1 , the conveyor belt 203 rotates counterclockwise. Since the conveyor belt 203 needs to carry magnetite materials and is affected by the range of magnetic lines of force, the conveyor belt 203 should be a high-strength and thin conveyor belt, usually made of stainless steel.

The first magnetic system 204 is installed on the inner side close to the upper surface 2031 of the conveyor belt 203, specifically, below the conveyor belt 203 moving to the left, where the first magnetic system 204 and the second magnetic system 205 are fixed on the frame. It is installed close to the inner side of the lower surface 2032 of the conveyor belt 203, that is, above the conveyor belt 203 moving to the right, where the second magnetic system 205 is fixed on the frame.

In a preferred embodiment, referring to FIG. 1 , the bottom outlet 102 of the rack 1 includes a first tailings outlet 1021, a concentrate outlet 1022, a middle mine outlet 1023 and a second tailings outlet 1024, wherein the first tailings outlet 1024 The port 1021 is located below the magnetic drum 201 of the first gradient magnetic bed 2. A first tailings channel is set on the side of the frame 1 close to the magnetic drum 201 by using the separator 7, and communicates with the first tailings 1022; the concentrate port 1022 is located below the transmission cylinder 202 of the first gradient magnetic bed 2, and a concentrate channel is also set through the baffle 7, and is communicated with the concentrate port; the middle ore port 1023 is located in the transmission cylinder 202 of the second gradient magnetic bed 3 And below the sweeping drum 4, a middle ore channel is also set up through the baffle plate, and is communicated with the middle ore mouth 1023; the bottom of the sweeping drum 4 is provided with a second tailings mouth 105 through the baffle plate, which is located away from the middle ore mouth 105. Below the 1023 side.

In a preferred embodiment, referring to FIG. 2 , a plurality of first permanent magnets are directly mounted on the frame 1 at the inner side of the upper surface 2031 of the conveyor belt 203 to form a first magnetic system 204 , and the first permanent magnets are arranged along the conveyor belt 203 The movement directions of the upper surface 2031 are arranged at intervals, and the N poles and the S poles of the first permanent magnets are arranged alternately. The N pole and S pole of the first permanent magnet are alternately arranged, so that the magnetite material jumps, which is conducive to the material turning over under the action of magnetic force, fully stirring, and improving the separation effect of iron ore logistics.

In a preferred embodiment, referring to FIG. 3, a plurality of second permanent magnets 2051 are installed on the frame 1 at the inner side of the lower surface 2032 of the conveyor belt 203 to form the second magnetic system 205, and the second permanent magnets 2051 pass through the screw rod The elevator 2052 is installed on the frame 1. By controlling the height of the screw elevator 2051, the length of the magnetic field line of the second permanent magnet 2051 is controlled. When the second permanent magnet 2051 is far away from the lower surface 2032 of the conveyor belt 203, the conveyor belt 203 moving to the right The magnetic force of the surface of the conveyor belt 203 is weakened; when the second permanent magnet 2051 is close to the lower surface 2032 of the conveyor belt 203, the magnetic force of the surface of the conveyor belt 203 moving to the right is enhanced.

4 , the second permanent magnet block 2051 is connected to the electromagnetic disk 2053 and installed on the rack 1. The electromagnetic disk 2053 conducts electricity, and the magnetic force of the second permanent magnet block 2051 is controlled by controlling the magnitude of the current. Therefore, it is convenient for the sorting of magnetite materials suitable for different situations.

A preferred embodiment, referring to FIG. 5 , the magnetic drum 201 is provided with an inner drum 2011 and a plurality of third permanent magnets 2012, the inner drum is installed on the shaft of the magnetic drum, and the third permanent magnets 2012 are installed on the magnetic drum 201 On the side away from the transmission drum 202 , the third permanent magnets 2012 are radially arranged along the outer surface of the inner drum 2011 to form a semicircular ring, and the N poles and the S poles of the third permanent magnets 2012 are alternately arranged.

The magnetic drum 201 uses gravity, magnetic force, centrifugal force, etc. to separate the magnetite materials. One side of the magnetic drum 201 has magnetic force, and the other side has no magnetic force. The tailings without magnetic force are thrown out, and the magnetite ore with magnetic force is adsorbed on On the conveyor belt 203 on the side of the magnetic drum 201, when the conveyor belt 203 moves to the place where the magnetic drum 201 has no magnetic force, the magnetite ore adsorbed on the conveyor belt falls into the first ore distribution conveyor belt 5 or the second ore distribution conveyor belt due to the disappearance of the magnetic force. 6, and then the magnetite material on the first ore separation conveyor belt 5 or the second ore separation conveyor belt 6 is further sorted by the second magnetic system 204 by magnetic force.

In addition, the cleaning drum 5 and the magnetic drum 201 have the same structure, both are semi-magnetic drums, and the separation of magnetic particles and non-magnetic particles is realized by centrifugal force and the action of the gravity and magnetic force of the particles themselves.

In a preferred embodiment, referring to FIG. 1 , the feeding ends of the first ore-separating conveyor 5 and the second ore-separating conveyor 6 are respectively located below the side of the magnetic drum 201 close to the transmission drum 202 , That is, it is located below the place where the magnetic drum has no magnetic force. It is guaranteed that the magnetite material (magnetite adsorbed on the magnetic drum) that has not been thrown out will fall into the first ore separation conveyor 5 or the second ore separation conveyor 6 with the movement of the conveyor belt 203 due to the disappearance of the magnetic force. After further sorting, the thrown non-magnetic tailings are all thrown into the tailings mouth.

In another embodiment, the rack 1 is fully enclosed. Realize fully enclosed operation, reduce dust pollution, and ensure safety and environmental protection. The fully enclosed type is a conventional means in the field, and any implementable means in the technical field can be used.

In addition, the magnetic drum 201, the transmission cylinder 202 and the conveyor belt 203 in the present invention are not in contact with the magnetic system, which reduces mechanical wear and reduces the failure rate of the equipment.

The dry separator in the utility model is also provided with a control system, and the control system is respectively connected with the first gradient magnetic bed 2, the second gradient magnetic bed 3, the sweeping drum 4, the first ore separating conveyor 5 and the second ore separating conveyor Machine 6 is connected to control the normal operation of the dry separator. The installation of each component in the present invention is a conventional means in the art.

The specific working process of the dry separator of an embodiment as shown in Figure 1:

The magnetic force of the first gradient magnetic bed 2 is weaker than that of the second gradient magnetic bed 3 , the magnetic force of the second gradient magnetic bed 3 is weaker than that of the sweeping drum 4 , and the conveyor belt 203 moves counterclockwise.

First, the magnetite material falls onto the conveyor belt 203 of the first gradient magnetic bed 2 from the feeding port 101 (the feeding port 101 is located at one end of the transmission cylinder 202 of the first gradient magnetic bed 2 ), and the transmission cylinder 202 is driven by the motor. Drive the conveyor belt 203 to move counterclockwise. Due to the action of the first magnetic system 204, the magnetite material keeps beating on the conveyor belt 203, and it is fully turned and stirred to ensure the separation of the magnetic material and the non-magnetic material. The magnetite material follows the conveyor belt 203. After the magnetic drum 201, under the action of gravity, magnetic force and centrifugal force, the non-magnetic tailings are thrown out and output from the first tailings port 1021; the magnetite material that has not been thrown out due to magnetic The magnetic force of the drum 201 is adsorbed on the conveyor belt 203. With the continuous movement of the conveyor belt 203, when the conveyor belt 203 moves to the place where the magnetic drum 201 has no magnetic force, the magnetite material on the conveyor belt 203 will fall into the first ore distributor conveyor. 5, with the movement of the first ore conveyor 5, the magnetite ore material moves to the bottom of the second magnet 205 on the first gradient magnetic bed 2, and the magnetite ore material on the first ore separation conveyor 5 has the strongest magnetic force. The material (concentrate) is adsorbed on the surface of the conveyor belt 203 by the second magnetic system 205 on the first gradient magnetic bed 2 and continues to move. When it moves close to the conveyor drum 202, the magnetic force on the surface of the conveyor belt 203 disappears, and the concentrate It is thrown into the concentrate channel and is output from the concentrate port 1022;

The magnetite material remaining on the first ore separation conveyor 5 and not adsorbed by the second magnetic system 205 on the first gradient magnetic bed 2 continues to move with the first ore separation conveyor 5, and when it moves to the first ore separation conveyor At the end of the machine 5, the magnetite material falls on the second gradient magnetic bed 3 for the second screening. The screening process is the same as that of the first gradient magnetic bed 2. The magnetic force is strong, the tailings are thrown out by the magnetic drum 201 , the magnetite material that has not been thrown out falls on the second ore separation conveyor belt 6 , and the magnetite ore raw material on the second ore separation conveyor belt 6 passes through the second gradient magnetic bed 3 . The second magnetic system 205 on the upper part adsorbs the material with relatively strong magnetic force (medium ore) on the surface of the conveyor belt 203. With the movement of the conveyor belt 203, the relatively strong material (medium ore) is thrown into the medium ore channel. Mine port 1023 output;

The magnetite ore material left on the second ore separation conveyor 6 continues to move and is transported to the scavenging drum 4. Under the action of magnetic force, gravity and centrifugal force, the tailings and medium ore are sorted, and the tailings are thrown into the second ore. The tailings port 1024 is output, and the middle ore is thrown into the middle ore port 1023 for output. Then the separation of magnetite materials is completed.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that : it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the various embodiments of the present utility model Scope of technical solutions.

Claims (9)

1. a multi-gradient magnetic adjustable dry separator, is characterized in that, comprises frame, the first gradient magnetic bed, the second gradient magnetic bed, the scavenging drum, the first ore distribution conveyor and the second ore distribution conveyor machine, the first gradient magnetic bed is installed on the upper part of the frame, the second gradient magnetic bed is installed in the middle of the frame, the sweeping drum is installed at the lower part of the frame, the The first gradient magnetic bed and the second gradient magnetic bed are connected by a first ore-separating conveyor fixed on the frame, and the second gradient magnetic bed and the cleaning drum are connected by a second gradient magnetic bed fixed on the frame. The ore separation conveyor is connected, the top of the frame is provided with a feeding port, and the bottom is provided with a ore outlet. 2 . The dry separator with adjustable multi-gradient magnetic force according to claim 1 , wherein the first gradient magnetic bed and the second gradient magnetic bed have the same structure, and the first ore separating conveyor has the same structure. 3 . The structure is the same as that of the second ore distribution conveyor. 3. A dry separator with adjustable multi-gradient magnetic force according to claim 1, wherein the first gradient magnetic bed comprises a magnetic drum, a transmission drum, a conveyor belt, a first magnetic system and a second magnetic The magnetic drum is installed at one end of the upper part of the frame, the transmission drum is installed at the other end of the upper part of the frame, the conveyor belt is wound on the magnetic drum and the transmission drum, and the first magnetic system The second magnetic system is installed near the inner side of the upper surface of the conveyor belt, and the second magnetic system is installed near the inner side of the lower surface of the conveyor belt. 4. The dry separator with adjustable multi-gradient magnetic force according to claim 3, wherein the outlet comprises a first tailings outlet, a concentrate outlet, a middle mine outlet and a second tailings outlet , the first tailings port is located below the magnetic drum, the concentrate port is located below the transmission cylinder of the first gradient magnetic bed, and the middle ore port is located between the transmission cylinder and the second gradient magnetic bed. Below the scavenging drum, the second tailings port is located below the side of the scavenging drum away from the middle ore port. 5 . The dry separator with adjustable multi-gradient magnetic force according to claim 3 , wherein the first magnetic system comprises a plurality of first permanent magnets fixed on the frame, and the first permanent magnet is fixed on the frame. 6 . A permanent magnet is arranged at intervals along the moving direction of the upper surface of the conveyor belt, and the N poles and the S poles of the first permanent magnet are alternately arranged. 6 . The dry separator with adjustable multi-gradient magnetic force according to claim 3 , wherein the second magnetic system comprises a plurality of second permanent magnets fixed on the screw lifter or the electromagnet, so the The screw lifter or the electro-magnetic disk is fixed on the frame, and the second permanent magnets are arranged at intervals along the moving direction of the lower surface of the conveyor belt. 7 . The dry separator with adjustable multi-gradient magnetic force according to claim 3 , wherein the magnetic drum is provided with an inner drum and a plurality of third permanent magnets, and the inner drum is installed on the On the shaft of the magnetic drum, the third permanent magnet is installed on the side of the magnetic drum away from the transmission drum, and the third permanent magnets are radially arranged along the outer surface of the inner drum to form a semi-circular ring, so The N poles and the S poles of the third permanent magnet are alternately arranged. 8 . The dry separator with adjustable multi-gradient magnetic force according to claim 3 , wherein the feeding ends of the first ore-separating conveyor and the second ore-separating conveyor are respectively located on the magnetic drum. 9 . Close to the lower side of the transmission drum. 9. The dry separator with adjustable multi-gradient magnetic force according to any one of claims 1-8, wherein the frame is a fully enclosed type.

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